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Finding the Fourth Proportional to 695,693.80, 960,078.18 and 440,986.60

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Solution

The fourth proportional to 695,693.80, 960,078.18 and 440,986.60 is: 608,574.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,693.80 : 960,078.18 = 440,986.60 : x
  2. Step 2: Convert to fraction form
    695,693.80/960,078.18 = 440,986.60/x
  3. Step 3: Cross multiply
    695,693.80x = 960,078.18 × 440,986.60
  4. Step 4: Simplify right side
    695,693.80x = 423,381,612,332.39
  5. Step 5: Solve for x
    x = 423,381,612,332.39/695,693.80
  6. Step 6: Final answer
    x = 608,574.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.